T-Rex Arms

I have a problem when I talk, cause I start talking and then my arms somehow become shorter and I'm talking with my arms from the elbow up. I start just flipping my arms everywhere and I never notice until it's too late and someone notices and points it out. Then they make fun of me but if I start talking with full arm movement I end up hitting someone in the face so I have no choice but to do T-Rex arms. I have tried to talk without arm movement but I just physically can not talk without moving my arms. Most of the times I just roll with it and make T-Rex noises if anyone calls me out on it now